A publisher is a company or individual responsible for producing and distributing books, magazines, and other written materials. They handle various tasks, including editing, design, marketing, and sales, to ensure that the content reaches its intended audience. Publishers can work with both established authors and new writers, helping to bring their work to the public. In the digital age, many publishers have expanded their services to include e-books and online content. This shift allows for a broader reach and accessibility, as readers can easily download or access materials on devices like tablets and smartphones. Notable examples of publishers include Penguin Random House and HarperCollins.